Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b65dd7dfd339be49f08c0506bb0ab24286ec4fa1d307e89c33deafed73c38c0b' 
  AND token = 'tRVquTXEqkVmH1JP9uHIdT+TVh8viTlGSNGLb+S4jgE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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