Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '57435a41a8755664ace1cfe559219687a6d0459a7a7fe752b579e3e7525b5ecb' 
  AND token = 'HmohbIWwj+Dv8jWbRIBWiBpJa2s3ABEQem+XEZi09bc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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