Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4392bda427d58e04867ba3bd5558b559649610fa1b65a6dd3174281ae4286a9e' 
  AND token = 'Z6L1SViJygA3qxdz4iP8UAa0r91H0dP3VUMW+fKb1xo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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