Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f39f4864b05be386661cb4f7f4fc9a6e855d0c7ad2aa24baee18fe608edc694' 
  AND token = 'ZRR/QDB8WNDeENyXj0kSJ27kHpRnBbWCl8nMH216WKY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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