Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd05d943f3350046f62504b7d668d3049686125b4c506b8bf4633562bcf1c5af7' 
  AND token = 'yym5lsE8JPIm5kmNkS+EJjsqipTIwzZUgS88/F9aBHo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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