Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8505f586f9baa8eb71ae3367f81636c10fae567f9e7e244d33dd6088eb49404a' 
  AND token = 'p/0oNiEirTuEp+NBRkiJ9CCE9RUatwqa3UFQ4CyTJzA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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