Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f58ef9561dc0b69577b1a620dab0b67efc7b7dabcae023a0cddbaecb88b8075' 
  AND token = 'SsHtAIX2CO4kwV9w5h3Yb/oJ1+LvFAijKL6eG3tT7pE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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