Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bf9dea10449c8dcb5321cadc3777e7d5e29da4971b5b79221c40061e3f8b0acb' 
  AND token = 'LD9wxcuofJKbR6qCJfwbotev4yRYLxPb8v+ccccmeTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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