Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bf65cf6d9004beeb63135426f8e063924b219bfee96cd7033932e529f3c6e9d' 
  AND token = 'mCzVA37X3wXtWFPrqqsa+bn5q1nMaAPpeJF2KV4SSrc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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