Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a023d3d6888f773adc383f32562936d0ae079d77126529fabb457f760d4a10d' 
  AND token = 'ZvZG6npggNNsglMm1nS+LpF4+wzkvGa+olWFmG9ZFf8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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