Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '20f8d3ac905c2c2b39341cf55d144c94b588ba30abc5407be60d2e058dad715c' 
  AND token = 'SoNs84zTjK8IFWezuRJIPoQXVp2OtgWSp8irmRBpR4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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