Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bea56630cced2971107268c0d49ff084eade23bfb87cce8e4d46d44b13006804' 
  AND token = 'YKWi0+uUTN3ZD63095APLxGccPCAOV26VRA/JKQ393A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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