Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'fa4d05aced6bac04a7d2fb5bfdbf41f7da96501ede1bcd5a3d228232f751d899' 
  AND token = 'OrbJj5+mgTFstx8FVysm3R9sJSS5X9i3nVcazOOE1n8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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