Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '584a018495b3553445f9505ff3675e387a95baacc8cec1dd4b6b67d751d7b38d' 
  AND token = 'C7tUOtAG0c1qPIMDQMrOrQZJ9v3lqHQUbrhUd9XYzgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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