Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f55764f8b8ecff63f8892239e24c3eb6fe4076c33c35fea531e0448ee008bed4' 
  AND token = '07vlLeikbXqHxF6ietcondKKNzHbMVV0r0EpryFWquk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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