Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '15880e3109b5b26b87a84122d48f55911c972854a16114c716cbf61d5a37d2ef' 
  AND token = 'rLt4YJvlE1HCStZb1yzVAJjJKVCQbe32A6hp9V1Rz5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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