Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be2f2fe7f22cdbd4b0ccb0d3d0f46a84a45a604599cbdacd26066e854706bded' 
  AND token = 'qTeaLCb9x1IDtncKv5vIKl+ei01Dk9DWIYpHcY8j8GE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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