Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '741d371bcfd792b43ffa5e4550bc1ecfcce59efd97009091c9835af21b40992d' 
  AND token = 'iPDeK+U3eLfETX8dSTpJFS9gsAXC0MqxmBZPyDnXOJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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