Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '363cb060715db606e88c29fe7763ffb55b986ee2a5651f6ccc406449c7d399fe' 
  AND token = 'gm6jybB9yK3nrkpvugtFPlqDMEFet4NeDq7t/AqWmMY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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