Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5ccb69eccaf125102ba0f70e2ac5a6265b8e06f3e2dbb1bf8dab16f5fc2398ab' 
  AND token = 'iFAh2tMlBaA6fWNvOXRQhhAtLYdS1r3P6sX0QPy6GGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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