Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53289aeb5d86e73e452ee091fdc84d6d05c5a7a5092b8a8171d4bb5fe20d7243' 
  AND token = 'SxU1GNyuSorhNUoXzFGKW/ubwk5yjh/Qf7Pwf7biU4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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