Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f737d8bbdc10224837a1e72872da2809e21495b0f83a089a5f5c45a824d29167' 
  AND token = 'STVFfYX4sqsy/6cozJyt5IKsV+c8iICziRblYna55zY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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