Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '672611d8c706565db9051d04e62fcd81a74464d3229a722c5c41b5891ebb5cf0' 
  AND token = 'XuWYIw0eEq9Xwru3EOwfye+y3My5KxfCInISOqo97j4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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