Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5185afaccd13623f807e00a586c8bc28507cd3c669cf950083222cbc79c1224c' 
  AND token = 'EgiMoGeG/rS5uTuiVMsM0YHKJOI9pJyOGyjm0d76C0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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