Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1302bd8ed8f1347be2224264207586deb68df3bf587314d28d62a747d4ffef0e' 
  AND token = 'Izv3NB9Mx0LEIGowYsjky0NAQ7EX94nRcngfzadrL+Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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