Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b779ead7cc2a652c6952b2f2bbf830a30652dce898972d6998f2077e495baa7' 
  AND token = '7pDSOMT9oxYDBpdxENcJPekDZyyH3PAU/gF4uM5Z2jE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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