Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e591d9c787b71565faba63911d215ed96195b952d4f34d5c2850e5709d7024c3' 
  AND token = 'LPLmvjIN+++lZCH9b51ZMTVz/Hr/CHfWuGxL7NSMHVM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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