Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0a10ed833c126d236eb9cb5229ff102604b32a7df94c44c4189f8f5e340efe7b' 
  AND token = 'IaNLZF7EbStAzOcj4QDjqImUG9p4yrE3od/Q9xM02Yk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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