Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '15638f1c792cebe5909be24fd880c4268aa65ad288eb49e1228ffec159e9b91c' 
  AND token = 'fLytT9zAj/HkYgEBnYAEbv8VyBiLPjGBU2kBGNfsSwg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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