Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'e4f42b1d71f34f5683a0cc9d9b73f699ebe394f564fa19f971d889a26d782a23' 
  AND token = 'Y0NJp87XkWsbcSG4MosMa8Yj6VSrCFE0e6pIhTsI8ck=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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