Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f63f477ff3cdc763cad2d501216867aa8b18167aef64545710c2f5670dd96c6' 
  AND token = 'hq4/a/LHSighGxR31Hb7aqpdDIjdCDUQQpe0SgzKK04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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