Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aff8da3d5f9164b68f66d20f0d552957d7f2c06a5cba87f65cf0b15440e4120c' 
  AND token = 'sk545mQ9hQJFW5LUbCeDglOOsU2tm/k29yPXZtEbM54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}