Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '140cd09c8146fd030ce94582b475f9909ac17ed4433c1a868dedf0b4171d972f' 
  AND token = '9QqOklBc65zyHmVY0jz9iNypdVLa2gcxSYfY4bZc0O8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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