Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '554abd926002e831619597a974dffb765628e51be137f72fa352dced298049c5' 
  AND token = 'tggpLv+oV2YYeeFvFeIlCqINqfzbz0x2sORU5jtm1fc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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