Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4999b063353b0dcfebc13aaeccd7fafb5c9af21d48c2d4baeacda8c38cb812dd' 
  AND token = 'hVbs2wMpmxXxBdgamBpecjVRRRYKUOGwwHIcZa2k4iY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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