Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '71ecc2d03ca684b71c2414b77cc28d54f1da8160c7f2c0528d9dd587c1f783f2' 
  AND token = '8lzdPwLQORl0s5rvS20Xn3AsgDXzf6BUVmPfSun09PE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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