Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d513152a9aad708b9cc4e7608017efc4248bb7ac4d93a663229c145ae7e17dd' 
  AND token = 'DW+xZKP1TwfZ9qlE61aip7wUl5KM50zujogjOnXiw8Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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