Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '57574b46b67bfdc6504fe4e2b954c7f5cf16b1bc8e66538b6fa24203c0224096' 
  AND token = '7HPvx5Xro8oWT92vinWahpbZxg+hEX1a8+cmwZEUxLo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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