Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7356424e03e8c51485d426115eba31b4122ea1e003ae4f5974f032870fe3569f' 
  AND token = 'ptNxQzr/mjfjJ5BEQZv+/RzzHAzBnOONlhN4js+Xe/M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00061

JSON explain

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