Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91b96428bdad834f9843b75d836cc16cdad081a54f6ada1d6b80f8ccd308739c' 
  AND token = 'xVZKja/b2recOIfVUCk9AKnhWWFuoccnTppmrM5QaLY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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