Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'efe27eab288ba15a0c0f86bec6f674297a19c86d07d2c0d058350465d42097a8' 
  AND token = '7jyncm+/Zmvm/36uyBm0VAwpbU8RtioEwyqkSnwmLpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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