Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a0448cbb1ae4692fb2c682467470ddb46bf90734b21b0c5659aa7b49aabd657' 
  AND token = 'NuU5t2kyvadkp9nKXfsp4+aIeszOAtnDTOfOKcJ8u64=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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