Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b64272e75229792c6e53b8c1de7faac7a4bd472b7723b99210c5a2ccac0c8a9e' 
  AND token = 'cjLfGHo1+ABAbL6Ie/SQu/HnydqfvDc67RmxHzjxakw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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