Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '637d93e1194f56a710ffcba9ce9f880774ecdd18e7f90ef4d55367ef3d60c500' 
  AND token = 'RZMA5zJg9SUruYBH/Xb3CcOtH7OE+yAd9YkYNjHbRFs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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