Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec22231dda999d1c7081c77a2bc4f3b2a9619977fda2a9e0533b11ea2d140f1a' 
  AND token = 'Dz3MHtgaDya4IjSqxRTv4BAUo6knSzn9DGeYuxQEOXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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