Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c272da19abcc9a14adf1f5494679df3c5d483aa0a63cec52b41928ca57db1149' 
  AND token = 'M7tT0/mVG5sd69dgmrkB/zYqOLxR+KcwoCM2lyYPs5k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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