Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a07a852881756176d0205b03c54dabcde4787e81ab8a138c8b2741d0420338e' 
  AND token = 'LDazzJYd5cUQKXUzHKadH9F6ydwGVPtTpcO0eHCtjl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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