Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fcb901291ef647e1751666391cd8656457550b7f6cd54876b3b4d97537b543d' 
  AND token = 'we9OWswmDbrPgj//My+VbsCy0dAbg85egUBlLtsU6SY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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