Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59310dcc8c161abe0048060e1dd831bee92751b20e7851fd9f1d5424c0a47592' 
  AND token = 'RhQDJBE7/6ysy7I9/9yTjohJpi+jVDLTqJ2SS4IcqJ8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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