Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '613793b864a4ac29935b578382c7ce760dcb5ff472a68a37a1e01912da2b7584' 
  AND token = 'o5YQxEeDyFTTH25BNOQrNG+tFQyElyP3So3jWDDa7uY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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