Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '3f563f61738115f44d4cd4a0d8219150bfd04fbdfde61549d0d5aa0efb3a7ea7' 
  AND token = 'oOHf6SJkHbjH1BKmsSgwut2X9iazbPDA+yXCmPrdQIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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