Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '12780bb7057c75a2d8fb9ad02439dd42fae0242fb8cf37321466dd6f3d5d82e2' 
  AND token = 'djsxlYjaSH5BH5VBaL2CxWeybc/NOkAlj9bCobXskUw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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