Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a7e82a6e87091b93cc1433dfc8f84569cf0504a4446580ce3c7b7b9abd2b8a6' 
  AND token = 'aLpb7G6jrWOzylA4c+P5dZUGHEebK68K4JP0wP1vWMk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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