Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60391e14193a68166cb55bcaf2fe8fa559047f7109ae4c02a774e856fc58e249' 
  AND token = 'PgiHQYopOGpfRj6UwImRa3ORRq92ISP/1DOYrEpQn1E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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