Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13c59dc44223d8acd80374941fc04c716413a9581931894ad57aaab3eb0d0d40' 
  AND token = '2kAg9of1hUVzp9DCeD2Et0vKKZY7ASBFYd0Fnn7y+dk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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