Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70ceff40fa44ea6c98963561d4bfeeb7cb8bf4e92a4e88fd46a9b929f8d25856' 
  AND token = 'x2WU4/1TyIb+t4lTt9ViWEi/QBchuv3FiUGP/f16nuU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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