Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8a13a0a516d2db1cc4412f3c8d62ae853d2d63e4ebdc710abc11b93e309b03c7' 
  AND token = '4dljhqAVySxAVdEJbezEhJU4r9CgIDMZXtkrCMqwaNU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00101

JSON explain

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