Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fef0d8d0e18d4478ea577d3926727f86c9fb484d0192f6557e1ecee9037ad8fc' 
  AND token = 'WHIaJETX0nWa3sdvA+hFFDMCbPBUu2j/x0mCWJkmwb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}