Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4e6caeb508ef3f7b1dbf7ac3f452421ff6cdf418edd3edbca4fa23c1bcf3565f' 
  AND token = 'AA+60CaSk1BxtpqEbyxK2M64+i1iuowwXEcFS588zA8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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