Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d877794b64871b2215cd9632ba8fcb79f88a99ed3a8716f5db161f5e94cdd97' 
  AND token = 'TFqUkSupKJJPg1d3DJLKtnbqtrLw88fZWCtWDedIluA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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