Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd34c27161adbd4826cdbb8284e91bb4dac9d36b0bac1704cc359adf8c07ddb5b' 
  AND token = '17bOP0jlVywCLANMEj0niogi4FSWa1fo3lEmy3Zq8Pk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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