Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7fac505c856c9ec6fe3341a56ba8605864b66b72cb094db0efd902be490ba91b' 
  AND token = 'e9/6xMJmCYiOSCDE6r2xNn/u5s6PX6krP7FBL0mFW4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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