Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5ac6490283a79d5a1180635fb40f0fff87985ca4d691a3ca13353961a0e32ef' 
  AND token = 'q5+OrN+lkfOf7zIzVgMiuai64J5VLQ6tCnJa2JZvnos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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