Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a798d9cb6369935338be3773490f5961b72bb2a489c15f33fb2c01f164e711b' 
  AND token = 'CyfYJiPfu3H5b2LGih5Gk4EVMQ1JYw0isAi44qJZzFo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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