Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eef12d5a45e4c507c95bd4d4a5abf59aa8caeebfd65f8663c073c02ccca12a37' 
  AND token = 'BIe8J0tmjzh65+nr2J43Zp68oZMMB1O3RvYutqllCvQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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