Is your feature request related to a problem? Please describe.
Finding rows by a known value in a known column takes too many steps in the Data tab. The current options:

• Filter editor: type the WHERE clause by hand (column name, quoting, operator)
• Multi-column filter: searches all columns with LIKE '%x%' – wrong hits, full scan, and it ignores the index on the column I actually mean
• Quick filter: needs a cell with the wanted value already visible, or a right-click → prompt dialog

phpMyAdmin, DBeaver, DataGrip, TablePlus and Excel all offer a query-by-example form: one input per column, type a value, done. For the most common case ("show me the booking with boxid 12933335") HeidiSQL has no direct equivalent.

Describe the solution you'd like
An optional filter row directly above the grid header in the Data tab (toggle button next to "Filter", or a checkbox in the filter panel): one edit field per visible column.

• Typing a value and pressing Enter generates the clause into the existing filter editor and applies it, e.g. boxid = 12933335
• Operator derived from the column type and a few prefixes, same rules the Quick filter already uses: numeric/date → =, text → LIKE '%x%', !x → !=, >x / <x as typed, null / !null
• Several filled fields are joined with AND
• Clearing a field removes its clause; the generated text stays editable in the filter editor as today

This reuses the existing filter machinery and the Quick filter's clause generation, so it's mostly UI on top of what's already there.

Describe alternatives you've considered

• Keeping the filter panel open and typing col = 'x' each time (works, but column names must be typed/autocompleted and quoting is on the user)
• Quick filter via right-click → "column = [prompt]" (two clicks + dialog, and only for the column under the mouse)
• The multi-column filter (unusable on tables where the value also occurs in other columns, and slow on big tables because every column gets a LIKE)

Additional context
HeidiSQL 12.22.0.7382 on Windows. This is the one phpMyAdmin feature I still miss after switching; everything else in the Data tab is faster in HeidiSQL.