Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a0013c5d12c79108d81ef232b1dbe759b7727fc40d98b28fb90462fe199cacd' 
  AND token = 'ARXG9Ff1Qo6iga4/mmr026OHjjvoPc7NwcmGFfG7lXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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