Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4388151235ec4029fb64d2428748847bd7c8a5028e2dcf5bfaf4e54fabe4187' 
  AND token = 'kisbRegUmDU9njU/6vPLzNQiVqxe6NRznKW04ojP8AM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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