Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd035c02775c08a5978f63407baf1b856070110f00acbeb4641f2242c43888245' 
  AND token = 'Ffnq8P5Xw/ajv0wqt78F8qw49OwZvUwKIvNm6+qK2ag=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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